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parallel-to-serial conveter — Parallax Forums

parallel-to-serial conveter

ArchiverArchiver Posts: 46,084
edited 2004-04-13 19:06 in General Discussion
I am using the Basic stamp Basic Stamp 2p40 module. I have 8 bit
parallel and would like to convert them to serial (CE, CLK, DATA) to
drive the LED display, how could I do that?

Thanks,

Lee

Comments

  • ArchiverArchiver Posts: 46,084
    edited 2004-04-13 15:36
    SHIFTOUT will handle the clock and [noparse][[/noparse]sychronous] data pin; you can use
    HIGH and LOW to handle CE.

    -- Jon Williams
    -- Applications Engineer, Parallax
    -- Dallas Office

    Original Message
    From: huy_le123 [noparse]/noparse]mailto:[url=http://forums.parallaxinc.com/group/basicstamps/post?postID=vnEwYidVU95REhVfxtrISP_BstAtNQtX1T36ai-A-9PXPlmyMDXbFqzCMrzqYdWpbBcxTr_6qmsdcrHs3Q]huy_le123@y...[/url
    Sent: Tuesday, April 13, 2004 2:07 AM
    To: basicstamps@yahoogroups.com
    Subject: [noparse][[/noparse]basicstamps] parallel-to-serial conveter



    I am using the Basic stamp Basic Stamp 2p40 module. I have 8 bit
    parallel and would like to convert them to serial (CE, CLK, DATA) to
    drive the LED display, how could I do that?

    Thanks,

    Lee
  • ArchiverArchiver Posts: 46,084
    edited 2004-04-13 18:36
    Can the basic stamp Bs40 generate the clock upto 500Khz? If so, how can i do
    that using the SHIFTOUT?

    Thanks for the helps,

    Lee

    --- In basicstamps@yahoogroups.com, "Jon Williams" <jwilliams@p...> wrote:
    > SHIFTOUT will handle the clock and [noparse][[/noparse]sychronous] data pin; you can use
    > HIGH and LOW to handle CE.
    >
    > -- Jon Williams
    > -- Applications Engineer, Parallax
    > -- Dallas Office
    >
    >
    >
    Original Message
    > From: huy_le123 [noparse][[/noparse]mailto:huy_le123@y...]
    > Sent: Tuesday, April 13, 2004 2:07 AM
    > To: basicstamps@yahoogroups.com
    > Subject: [noparse][[/noparse]basicstamps] parallel-to-serial conveter
    >
    >
    >
    > I am using the Basic stamp Basic Stamp 2p40 module. I have 8 bit
    > parallel and would like to convert them to serial (CE, CLK, DATA) to
    > drive the LED display, how could I do that?
    >
    > Thanks,
    >
    > Lee
  • ArchiverArchiver Posts: 46,084
    edited 2004-04-13 19:06
    No, you cannot generate a 500 kHz signal with a BS2p. And SHIFTOUT on
    the BS2p runs at about 42 kbits/second. If you really need to send a
    synchonous stream at 500 kHz, I think you're going to have to do it with
    assembly language on a very fast micro (like the SX [noparse][[/noparse]NOT the BS2sx]).

    -- Jon Williams
    -- Applications Engineer, Parallax
    -- Dallas Office

    Original Message
    From: huy_le123 [noparse]/noparse]mailto:[url=http://forums.parallaxinc.com/group/basicstamps/post?postID=B5Y_gbqBIGLFInqmmCnaz338Gld-cmCm4aKUhmBTL2TTF3kPCu2NQQtm_7PzyfHUxxnAQOO2YIVEbA]huy_le123@y...[/url
    Sent: Tuesday, April 13, 2004 12:37 PM
    To: basicstamps@yahoogroups.com
    Subject: [noparse][[/noparse]basicstamps] Re: parallel-to-serial conveter



    Can the basic stamp Bs40 generate the clock upto 500Khz? If so, how can
    i do that using the SHIFTOUT?

    Thanks for the helps,

    Lee

    --- In basicstamps@yahoogroups.com, "Jon Williams" <jwilliams@p...>
    wrote:
    > SHIFTOUT will handle the clock and [noparse][[/noparse]sychronous] data pin; you can use
    > HIGH and LOW to handle CE.
    >
    > -- Jon Williams
    > -- Applications Engineer, Parallax
    > -- Dallas Office
    >
    >
    >
    Original Message
    > From: huy_le123 [noparse][[/noparse]mailto:huy_le123@y...]
    > Sent: Tuesday, April 13, 2004 2:07 AM
    > To: basicstamps@yahoogroups.com
    > Subject: [noparse][[/noparse]basicstamps] parallel-to-serial conveter
    >
    >
    >
    > I am using the Basic stamp Basic Stamp 2p40 module. I have 8 bit
    > parallel and would like to convert them to serial (CE, CLK, DATA) to
    > drive the LED display, how could I do that?
    >
    > Thanks,
    >
    > Lee



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